Spring-hinge.



T. G. MURBI$.

SPRING HINGE-I.

(Application filed. May 29, 1899.)

2 Shanta-Sheoi i.

(No Model.)

THOMAS GARDNER MORRIS, OF CHICAGO, ILLINOIS,

SPRiNG HiNGE.

SPECIFICATION forming part of Letters Patent No. 661,478, dated November 6, 1900. Application filed May 1899- Serial No. 718,715. (No models To all whom it may concern.-

Be itknown that I, THOMAS GARDNER Mon- R1S,a citizen of the United States of America, and a resident of'Chicago, in the county of 3 Cook and State of Illinois, have invented certain newand useful Im provementsin Double- Acling SpringHinges, of which thefollowing is a specification.

The present in vention relates to that particular type of double-acting spring-hammer in which the spring mechanism .is inclosed within a casing or housing which is adapted at pleasure in an easy and convenient manher, all as will hereinafter more fully appear. I attain such object by the construction-and arrangement of parts illustrated in the accompanying drawings, in which- Figure l is a longitudinal sectional eleva- 1 ion of a spring hinge embodying the present improvements; Fig. 2, a transverse sectional elevation of the same; Fig. 3, a top View of the same, with parts of the casing or housing broken away to show the hinge mechanism and with portions ofsuch casing in horizontal section; Fig. 4, a bottom plan of the hinge mechanism, with the casing or housing in section.

Similar numerals of reference indicate like parts in .he several views.

The present invention relates to that type of spring-hinges in which .a single coiled spring surrounds the hinge-pintle and is connected thereto in such manner that the opening of the door in one direction will wind up the upper end of the spring, while the opening of the door in the opposite direction will wind up the lower end of the spring, the lower end of the spring finding a stationary abutment in the one case and the upper end of the spring a like stationary abutment in the other case.

Referring to the drawings, 1 represents'the casing or housing of ihe'hinge, formed with an open top, the margin of which is flanged, as shown, and provided with a cover portion composed of sections 2 and 3, the whole being adapted to be inserted in the door or threshold flush with the surface of the same. The cover-section 2 is inteudedto remain fixedly attached to the casing 1, so as to af ford a bearing for the upper end of the hingepintle, while the cot er-secliou 3 isiutcnded to be readily removable to afford access to the mechanism of the hinge in the operation of changing the tension of the operatingsp'riug, as will hereiuafl er more fully appear. Atits lower end the casing l is provided with a step-bearing 4, preferably of the hall type, as shown, for the lower end of the hinge-- pintle. i

5 is the hiuge-piutlc, the upper end of which .is formed with a non-circularextension 6, that has engagement in a similarly-formed socket in a plate 7 on the under end of the door, as

usual in the present type of spring-hinges, and with upper and lower lateral lugs or stops 8 and 9, preferably in the form of removable stud-bolts, as shown.

g 10 is the upper spring-collar, loosely surrou uding the pin tle 5 and having engagement with the upper end of the coiled spring 11 in any usual manner, and 12 is the lower springcollar, arranged in like manner upon the pintle 5 and having engagement wiih the lower end of the coiled operating-spring 11. This lower collar is provided with a downwardly and laterally projecting lug 12'), that is adapted to contact with the lower lateral stop 9 of the pintle and with the vertical rib or stop 14: on the main casing or housing. (See more particularly Figs. Band 4: of the drawings.) With such construction when the-hinge-pintlc is turned to wind up the lower end of the operating-spring the pintle-stop 9 will engage against the lug 13 to impart motion to the lower spring collar 12, to which the lower end of such spring is attached, and when thepintle is turned in an opposite direction to wind up the upper end of the operating-spring the lug 13 will abut against the stop 14 of the hingecasing to afiord a stationary abutment for the lower collar 12 and the lower end of the opcrating-spring.

Movement of the collars 10,,

15, and 12 toward each other is prevented by the interposed spring 11, while movement of the same away from each other is prevented by the lateral stops 8 and 9 upon the hingepintle 5. In this manner the parts are retained in proper relative position in use.

too

In "the present improvement the upper springwollar 1O constitutes an element of the means by which Jhe tension of the operatingspring of the hinge is changed to suit the re-I quirements of any particular use of the hinge, and to this end said collar 10 will be provided with a coinpanion collar 15, that is formed with a stop or projection 16 to engage the upper lateral pintle-stop' 8, and with a stop or projection 17 to engage the vertical rib or stop 18 of the main casing or housing.

The spring-carrying collar 10 is. capable of circular adjustment independento'f the companion collar 15, and the two arelocked together at the required adjustment by the inlsertion of a locking pin 19 into a radial recess between said collars, which .isfiormed'by one oft-he radial recesses 20 in the collar'10eom-"- ing in line with'the single radial recess 21 in the collar -15,'as illustrated in Fig.2 of the drawings.

The ci rcularly-a'dj ustable collar 10 is form e'd witha series of radial capstan-holes 22 for the j insertion of the usual capstan-rod, by which 4 f gagethe lug or stop tfheadjustn ent of the said collar and of the operating-spring is effected, and in this con-' nection a material part of the present improvenient lies in the form'ationet' said radial capstan-holes 22in an inclined direction, as illiustra'ted in Fig. 1, and the arrangement of said cellar in a position adjacent to the cover of the"main housing, so as to afford ready and" conyenient access to the tension -adjusting. l me'chanism of the hinge, the'cover-section 3 v being adapted for IBB dYIGIHO Vfll to alibi-(l T such. convenient access to the tension-regu-- lating' mechanism. p I

' In the present construction when the hingepintle isturned to \Vlglld upthe upper end of theoperating-spring the pintle-stop 8 will en- 16 to impart motion to the upper spring-collar and to the upper end of the spring, and when'the'pintle is turned in an opposite direction to wind up the lower end of the operating-spring the stop or projection 17 will abut against the stop 18 of the hinge-casing to afford a stationary abutment for the upper collar and the upper end of the operating-spring.

Having thus fully described my said invention, what I claim as new, and desire to secure which is stationary and the other of which is cover for medin two sections, one section of removable, a hinge-pintle journaled at its upper end in said stationary cover-section and.

at its lower end in'a step-bearing at the lower part of the casing or housing, an operatingspring surrounding said pintle below the cover, devices for connecting the springwith the pin-tle', and means for adjusting the tension of the spring from above the casing, coinprisiug a collarhaving an inclined upper sur-' face provided with-inclined capstan-recesses,- whereby upon removal of the removable coversection said collar andcapstan-iecesses may he readilya'ccessible from above for adjust- 'nientof the spring tension without disturbing the locationof the hinge. v f Signed by me at Chicago, lllinois, this 27th day of May,'1899.

' 'THos. GARDNER MO RIs.

Witnesses:

' ROBERT BURNS,

R. A. WHITE. 

